topic Converted RasterToPoints were not positioned at the centers of cells in Esri Training Questions

Converted RasterToPoints were not positioned at the centers of cells

NangNguyen — Tue, 23 Apr 2019 00:21:44 GMT

Dear all,

I am very new beginner of ArcGIS and using ArcMap for Destop 10.4.1 to convert raster tif file to shapefile (points).
The problem I had is the converted points were not positioned at the centers of cells that they represent as can be seen in the attached picture. Please help me solve the problem.
Thank you in advance.

Re: Converted RasterToPoints were not positioned at the centers of cells

SteveLynch — Tue, 23 Apr 2019 11:34:42 GMT

What version of ArcGIS are you using?
What is the coordinate system of;
1. input raster
2. output points
have you set any environments?

-Steve

Re: Converted RasterToPoints were not positioned at the centers of cells

Suzanne-Boden — Tue, 23 Apr 2019 19:16:59 GMT

Hi Nang, see this help topic for information on the tool behavior. One possibility is that the tool's Processing Extent environment setting can cause the points to shift off-center. Setting the Snap Raster to your input raster file may fix the issue. http://desktop.arcgis.com/en/arcmap/latest/tools/conversion-toolbox/raster-to-point.htm

Re: Converted RasterToPoints were not positioned at the centers of cells

NangNguyen — Wed, 24 Apr 2019 01:10:28 GMT

Dear Steve

Thank you for your e-mail. My reply to your your questions as below.

1) ArcGIS 10.4.1 for Desktop

2.1) Input raster was NDVI TIF file obtained by remote sensing technique.

The coordinate system is ENU.

2.2) For output points, I used ArcMap Tool to convert raster to point,

so I do not know which coordinate system of the output points.

3) No environment was set

I am looking forward to your further advice.

Nang

Re: Converted RasterToPoints were not positioned at the centers of cells

NangNguyen — Wed, 24 Apr 2019 05:01:44 GMT

Dear Suzanne,

Thank you so much. I will try raster_to_point again following your instruction.